condition mean min max ZT0-3 0.8068934999999999 0.5127820000000001 1.1010049999999998 ZT4-7 1.69158 1.69158 1.69158 ZT8-11 0.9280065 0.9280065 0.9280065 ZT12-15 0 0 0 ZT16-19 0.7973655 0.7973655 0.7973655 ZT20-23 1.31765 1.31765 1.31765